Mechanical movement



J. C. STONE.

MECHANICAL MOVEMENT.

APPLICATION FILED DEC: 10, 192|.

Patented J uly 25, 1922 2 SHEETS-SHEET l.

J. C. STONE.

MECHANlCAL MOVEMENT. APPLlcAHoN FILED DEC. LQ. 192|.

1 ,423,9'73. y Patented July 25, 1922 2 SHEETS-SHEET 2.

JAY c. sToNr., or sroKANii,` WASHINGTON.

y MECHANICAL MOVEMENT.

Specification of Letters Patent.

Patented July 25, 1922.

Application led December 10,1921. Serial No. 521,345.

T 0 all whom t may concern.'

Be it known that l, JAY C. STONE, a citizen of the United States,residing at Spokane, in Spokane County and State of Washington, haveinvented certain new and useful Improvements in Mechanical Movements, ofwhich the following is a specification.

My present invention relates to improvements in mechanical movementsdesigned particular foruse in connection with mechanisms wherein it isdesired to convert the reciprocating motion of a driving or lpower plantor source of power, through the interposition of intermediateoscillating mechanism and levers, into the rotary movement of a drivenshaft. The primary object of the invention is the provision of meansutilized in connection with the driving and driven mechanism fortransferring power and converting the movement `with a maximum ofefficiency and a'minim'um of friction, and in such manner as to insure asmooth, regular, and uniform action of the operating parts of themechanism.r As an eremplification of the utility of the mechanism it maybe adapted for converting the reciprocating movement of a wind mill orother motor, operated by fluid currents, into rotary movement foroperating various mechanisms. The invention consists in certain novelcombinations and arrangements of intermediate levers and links andconnections between an oscillating` operating lever and the rotaryshaft, as will be hereinafter more fully pointedout. and claimed.

In the accompanying drawings I' have illustrated one completev exampleofthe physical embodiment of my invention wherein the parts are combinedand arranged according` to the best mode l have thus fardevised for thepractical'application 'of the principles of my invention` Figure 1 is aview in elevation showing a supporting frame for the mechanism of themechanical movement, with said mechanism in operative position, with thecrank pin moving downward, as indicated by arrows, over the right handquarter of the circle or pathV oftravel of the crank pin.

Figure 2 is a similar view, on a reduced scale, with the connections indierent position and the crank pin moving upwardly through the left handquarter of the circle.

Figure 3 is a top plan. Or edge'vi'ew 0f the mechanism of Figure 2,`with parts in section for convenience of illustration.

Figure 4 is an edge view of the operating lever on'the same scale asthat used in Figure 1.

In the preferred form of the invention as illustrated in the drawings,the lower end of an operating lever 1 is shown as pivot-ed at 2 to asupporting frame 3. This lever is provided with connections (not shown)at its upper end for imparting thereto an oscillatory movement on thepivot 2, and through the connections to be described the oscillatorymovement of the lever is conveyed to the driven, rotary shaft 4. Theshaft 4 is journaled in the frame 3 in vertical alinement withy thepivot 2 of the lever 1, and when in vertical position the lever isalined with these two centers. f

The driven shaft 4 has keyed thereto a crank disk 5 and carries a crankpin 6, upon which a fan shaped crank arm 7 is journaled `and adaptedy toswing or oscillate. At its free ,end the arm is provided with a wristpin 8, and a spring 9, interposed between the arm and alug 1,0 on thedisk tends to urge or kforce thefree end of the arm and wrist pin awayfrom theishaft'4. The oscillating movement of the arm with respect tothe disk is klimited bythe presence of a pair of arcuate slots 11, 11,in the crank arm, struck from the' center of the crank pin, and a pairof complementary guide pins 12, 12 projecting from the disk into theseslots.

At the respective sidesr of the lever 1 are a pair of side bars 13, 13,`rigidly joined at the bottom,fwh ich extends beyond the slide 11'byajoint plate or'block 14, and alsorigidly joined at the pivotal centerof the lever 1 by a block 15. This block 15, as seen in Fig. 4,A ispreferably integral with the pivot pin 2, and supports the pivotalconnection. of the lever 1. Thus the lever frame, composed `ofthe twoside bars and their rigid connections, is supported on and adapted tooscillate on the pin 2 as a center, and the slide lever 1 encased withinthe frame receives the oscillatingA movement to the frame, but isrelatively movable longitudinally of the framei. e. in a vertical plane.

On the wrist pin 8 is journaled an antifriction roller 16, which islocated in a slot 17 at the lower end of Vtheslide lever, and this slotis adapted to permit the entrance CIK of arms 18 and 19, of bell cranklevers, which arms are adapted respectively to depress and lift theroller by contact therewith, and thus rotate the disk 5.

These bell crank levers are located at opposite sides of the disk andare adapted to alternately engage the anti-friction roller carried bythe crank arm, passing into and out of the slot in the operating leveras the latter oscillates. rllhe bell crank levers are adapted tooscillate in a vertical plane and are supported, each, on a bushing, as20, 2O projecting from the supporting frame 3, through which passes apivot pin or bolt 21. A spring 22 is coiled about the pivot bolt andinterposed between the bushing or frame at one end and a hub 28 at theother end, the hub being a part of the bell crank lever. These coiledsprings are designed to swing the bell crank levers, and particularlytheir arms 18 and 19, the former upwardly, and the latter downwardly,for operative position with relation to the slotted sliding lever. Thusin Fig. 1 the arm 19 is pressed downwardly by its spring 22 and is inposition to enter its free end into the slot 17 ot the lever when thelatter oscillates to the left in Fig. l. n

Each bell crank lever has a collar 24 in front of the arms, as 18,19,and the lever ot which arm 18 forms a part has a plate 25 attachedthereto, as by screws, of which plate the extension 26 forms the shortarm of the bell crank lever. The long arm 1.8, the collar 24 and theplate 25 are rigidly secured together to form the bell crank lever andsaid lever is bodily oscillatable on the pivot 21. The short arm 28 oithe lever has at its end a pin 27 that coacts with the link 28, and saidlink is pivoted at 29 to a Iioint plate 80 rigid with and attached tothe lever frame. A combined not-ch and hook 81 is fashioned in the link28 to engage the pin 27 when the arm 18 is operatively engaged incontact with the roller 16, and it will be appa-rent that as the lever 1oscillates away from the pin 27 the under surface of the link 28 willride over the pin 27 to .position in F ig. 2, thus maintaining theproper relationship between the bell crank lever and the link 28.

At the opposite side of the shaft 4 a complementary connection isprovided for he bell crank arm 19. A plate 32, together with the collar24 and arm 19, are rigidly secured together to form the bell crank leverot' which 33 is the short arm and 21ris the pivot, but with the shortarm extending upwardly in reverse position to the short arm 28 of thedepressing bell crank lever. The short arm 33 carries a pin 34, and thelink 85, which is pivoted at 36 on a strap 37 rigid with the leverframe, has a combined hook and notch 88 for engagement with this pin. y

These links 28 and 35 are pivotally connected with the lever lrame andproject in opposite directions therefrom, and they are held in operativeposition by the respective springs 39 and 40 carried by the frame andbearing on the links as shown.

The movement olf the oscillating lever frame is imparted to the bellcrank levers, and through them to the crank arm and disk for rotatingthe shaft 4 by levers also carried by the frame. rlhus the draw lever 4lat the right oi the mechanism is pivoted at 42 on the lever frame and isprovided with a hook 48 which engages a hook 44- on the bell crank lever18--26- d.find it will be apparent that when the parts are in theposition of Fig. 1 the oscillatory movement of the lever frame istransmitted through the draw link 41 to the bell crank lever 18-26causinCr said lever to swing on its pivot 42l. The arm 18 is thus swungdownwardly pressing the roller and crank arm downwardly in the directionof the arrow in Fig. 1 to rotate the sha-itt 4. The link 28 also assistsin this movement, until the lever 1 begins to swing away from the bellcrank lever 18-26. As the draw link 41 swings the hook 44 of the bellcrank lever inwardly, the lower edge-of the draw link rides dovfn uponthe tace of the shoulder 45 ot the bell crank lever, and said draw linkis thus litted from operative engagement with the bell crank lever asthe crank arm is swung under and past theshaft 4. il spring 46 attachedto the lever frame bears against the draw link 41, as shown, to hold thedraw .link in operative position with relation to the bellcrank lever18-26.

A link 47, complementary to the draw link 41, is adapted to engage thenotch 48 of the bell crank lever 19-83 and push the short arm of saidlever, as seen in Fig. 2. This push link is pivoted at one end of afloating lever 49 that is pivoted at 50 on the frame 8, and a link 51which is pivoted at 52 to the lever frame forms the connection with saidframe. A spring 58 carried by the Heating lever bears against the pushlink 47 to hold the latter in operative relation to the short arm ot thebell crank lever .1Q-*83.

The operation of the parts in the transmission of power is indicated bythe dotted lines and arrows, together with the full line showing inFigs. 1 and 2, wherein the disk and its driven shaft are shownas beingrevolved clockwise. The power from the reciprocating member oi" adriving device is applied to the lever frame, and the slotted member 1of the operating lever is arranged to slide within the frame of thelever as the frame oscillates on its pivot 2. The sliding movement ofthe lever member 1 follows the rotary movement of the wrist pin 8 aboutthe shaft 4, and the oscillating movement of the lever frame is thustransmitted by a combined oscillating and reciprocating movement of theslide member to the rotary movement of the disk and its shaft. The slidemember is alternately depressed and elevated by the bell crank levers18-26 and 19-33, and these bell crank levers are alternately actuatedontheir Working strokes by the draw link 41 and the flexibleconnectioninvolving the push link 47. In this manner a continuous,uniform, and .regular motion is imparted to the crank disk and its shaftwith comparatively slight loss by friction, and as the disk performs thefunction of a fly Wheel the motion is Well balanced and the operation ofthe parts smooth and easy.

Having thus fully described my invention, what I claim and desire tosecure by Letters Patent is z- 1. The combination with a pivotedoperating lever,a` rotary driven shaft and crank disk and a crank armpivoted on said disk, of a slidable member carried by said lever andpivoted to said arm, a pair of opposed bell crank levers adapted toalternately engage said slidable member, and means actuated by saidleverV for actuating said bell crank levers.

2. The combination with a pivoted operating lever and its slidablemember, of a driven shaft, its disk and a relatively rotary crank arm onthe disk, a Wrist pin connecting said arm and member, a pair of opposedbell crank levers adapted to alternately engage said member, a draw linkpivoted to the lever and adapted to actuate one bell crank lever and apush link connected to the lever and adapted to actuate the otherbellcrank lever.

3. The combination with a pivoted operat-- ing lever and its slidablemember, of ya drivenV i shaft, its disk and a relatively rotary crankarm on the disk, a Wrist pin connecting saidv arm and member, a pair ofopposed bell crank levers, a pair of links actuated by the lever foralternately engaging said bell crank levers toy engage the slidablemember, and means carried by said operating lever for returning -saidbell crank levers to' operative position after a Working stroke.

4.-. The combination With a pivoted operating lever and its slidablemember, of a driven shaft, a crank disk and a relatively rotary cranklarm on said disk, a Wrist pin connecting said member and arm, a pair ofopposed bell crank levers adapted to engage said slidable member, a drawlink and a`push link pivotally connected with said lever and adapted toalternately engage said bell crank levers, and return links pivoted onsaid lever adapted to co-act with the short arms of said bell cranklevers. l

5. The combination With a pivoted operating lever and its slidable,slotted member, of a driven shaft, a crank disk and a relatively rotarycrank arm von said disk, a Wrist pin connecting said member and arm, apair of opposed bell crank levers having long arms adapted toalternately engage said slottedmember, va draw link and a push linkpivotally connected with said lever and adapted to engage the respectivebell crank levers, pins on the short arms of said bell crank levers, andnotched links pivoted on the operating lever adapted to engage saidpins.v

In testimony whereof I aiiix mysignature.

JAY c. STONE.

